U.S. judge on Wednesday ordered Martin Shkreli to be jailed while he awaits sentencing for securities fraud, citing a Facebook post in which the former drug company executive nicknamed the “Pharma Bro” offered a $5,000 reward for a strand of Hillary Clinton’s hair.

U.S. District Judge Kiyo Matsumoto in Brooklyn said the Sept. 4 post, which prompted a call from the U.S. Secret Service, showed Shkreli posed a danger to the public that warranted revoking his $5 million bail. U.S. prosecutors had moved to jail Shkreli last Thursday.